MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 7
·1-11
·
IF 6.232
Guo Hao,Wu Ning,Xue Rui,Liu Hui,Wang Mingyue,Yao Wenqin,Wang Xiaoqiong,Yang Wu
An Eu(III)-functionalized strontium-organic framework (Eu 3+ @Sr-MOF) was synthesized by encapsulating Eu 3+ ions into the pores of Sr-MOF via postsynthetic modification (PSM) and fully characterized by XRD, SEM, EDS, FTIR, and TGA. The luminescent properties of Eu 3+ @Sr-MOF were measured and investigated in detail, which demonstrated that Eu 3+ @Sr-MOF not only possessed excellent water and chemical stabilities in a wide pH range (5–10) but also displayed red luminescence with excitation/emission maxima at 332/617 nm. The Eu 3+ @Sr-MOF can be considered as a highly selective and sensitive recyclable luminescence probe for sensing Cr(III) and Cr(VI) based on strong luminescence quenching effects; it can be recycled at least five times. The luminescence probe for Cr 3+ , CrO 4 2− , and Cr 2 O 7 2− shows low detection limits (0.15 μM, 0.17 μM, and 0.13 μM, respectively), relatively broad linear ranges (0.6–150 μM, 0.1–200 μM and 0.4–180 μM, respectively), and high quenching constants K SV . The signals can be observed by the naked eye under UV light of 365 nm. The method was applied to the determination of total Cr in environmental water samples.
Graphical abstract
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-11
·
IF 4.011
Zhu Xiaowei,Yang Kuisuo,Wu Anping,Bai He,Bao Jinrong,Qiao Yan,Yang Yunjiang,Li Wenxian,Liu Ying
The novel submicro-spheres SiO 2 @LaPO 4 :Eu@SiO 2 with core-shell-shell structures were prepared by connecting the SiO 2 submicro-spheres and the rare earth ions through an organosilane HOOCC 6 H 4 N(CONH(CH 2 ) 3 Si(OCH 2 CH 3 ) 3 (MABA-Si). The as-prepared products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy (IR). It is found that the intermediate shell of the submicro-spheres was composed by LaPO 4 :Eu nanoparticles with the size of about 4, 5–7, or 15–34 nm. A possible formation mechanism for the SiO 2 @LaPO 4 :Eu@SiO 2 submicro-spheres has been proposed. The dependence of the photoluminescence intensity on the size of the LaPO 4 :Eu nanoparticles has been investigated. The intensity ratios of electrical dipole transition 5 D 0 → 7 F 2 to magnetic dipole transition 5 D 0 → 7 F 1 of Eu 3+ ions were increased with decreasing the size of LaPO 4 :Eu nanoparticles. According to the Judd-Ofelt (J-O) theory, when the size of LaPO 4 :Eu nanoparticles was about 4, 5–7 and 15–34 nm, the calculated J-O parameter Ω 2 (optical transition intensity parameter) was 2.30 × 10 −20 , 1.80 × 10 −20 and 1.20 × 10 −20 , respectively. The increase of Ω 2 indicates that the symmetry of Eu 3+ in the LaPO 4 lattice was gradually reduced. The photoluminescence intensity of the SiO 2 @LaPO 4 :Eu@SiO 2 submicro-spheres was unquenched in aqueous solution even after 15 days.
✓ 已验证
DOI
高影响因子
Crystals
·
2022
·Vol. 12
·期 7
·963
·
IF 2.67
Weili Wang,Shihai Miao,Dongxun Chen,Yanjie Liang
Trivalent lanthanides (Ln3+) doped bismuth-based inorganic compounds have attracted considerable interest as promising candidates for next-generation inorganic luminescent materials. Here, a series of K0.3Bi0.7F2.4(KBF) nanocrystalline particles with controlled morphology have been synthesized through a low-temperature aqueous-phase precipitation method. Using KBF as the host matrix, Eu3+, Tb3+, Pr3+, Nd3+, Sm3+,and Dy3+ions are introduced to obtain K0.3Bi0.7F2.4:Ln3+(KBF:Ln) nanophosphors. The as-prepared KBF:Ln nanophosphors exhibit commendable photoluminescence properties, in which multicolor emissions in a single host lattice can be obtained by doping different Ln3+ions when excited by ultraviolet light. Moreover, the morphology and photoluminescence performance of these nanophosphors remain unchanged under different soaking times in water, showing good stability in a humid environment. The proposed simple and rapid synthesis route, low-cost and nontoxic bismuth-based host matrix, and tunable luminescent colors will lead the way to access these KBF:Ln nanophosphors for appealing applications such as white LEDs and optical thermometry.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 12
·9612-9618
·
IF 3.289
Ming Chen,Jia-Hong Wang,Zhi-Jun Luo,Zi-Qiang Cheng,Ya-Fang Zhang,Xue-Feng Yu,Li Zhou,Qu-Quan Wang
Metal/rare-earth core/shell hetero-nanostructures combine the optical properties of metal cores and rare-earth shells, which are widely reported and expected to be used in multitask applications. However, there is still no facile and efficient strategy to directly prepare such materials. Herein, we present a facile hydrothermal method for directly coating rare-earth vanadate shells onto the Au nanoparticle (AuNP) cores. Citrate plays a fascinating and critical role in the whole synthesis process, and not only acts as the capping agent to stabilize the as-prepared AuNP cores and the final products but also serves as the complexing agent to assist the nucleation and growth of rare-earth vanadate shells. Interestingly, the grown Au/GdVO4:Eu core/shell NPs have a flower-like shape with tunable plasmon resonance and bright fluorescence. The morphology and crystallinity as well as the growth mechanism and tunable optical properties of the Au/GdVO4:Eu are investigated. The method developed here could be extended for preparing other metal/rare-earth hybrids and the multifunctional products with specific morphology have the potential in the photocatalytic and biomedical application.
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Xiaoyu Zhang,Qinqin Ma,Xinfang Liu,Huawei Niu,Lei Luo,Rongfang Li,Xun Feng
A new europium metal–organic framework ( Eu-MOF ) was prepared by simple hydrothermal method . The product exhibited intense red fluorescence, long fluorescence lifetime (0.454 ms) and excellent fluorescence stability. The fluorescence titration result showed that Fe 3+ could completely quench the fluorescence of Eu-MOF , while the fluorescence quenching effect of Fe 2+ or bromate was negligible. Considering the strong oxidizing property of bromate, a “turn off” Eu-MOF@Fe 2+ sensor toward bromate was designed by generating Fe 3+ due to the redox reaction . The results showed that the sensor displayed a wide linear range (0–0.2 mM), high sensitivity (LOD = 3.7 × 10 −6 mol/L), good selectivity and resistant to possible interferences in real four sample. Furthermore, the detection mechanism was investigated by PXRD, XPS and UV–Vis methods. More importantly, the Eu-MOF@Fe 2+ sensor was further applied to detect bromate in wheat flour with satisfactory recovery (95.30%−104.38%) and accuracy (RSD < 2.85%). These results suggest that Eu-MOF@Fe 2+ can be used as a potential sensor to detect bromate in food industry.
✓ 已验证
DOI
高影响因子
CRYSTAL RESEARCH AND TECHNOLOGY
·
2016
·Vol. 51
·期 9
·508-512
·
IF 0.908
Hai Wu,Youjin Zhang,Maozhong Zhou,Chengpeng Yao,Xianjin Ge
Large single crystals of lanthanide hydroxides [Ln(OH) 3 (Ln = La, Pr, Nd, Sm, Eu and Tb)] up to several millimeters have been grown by using solid KOH assisted hydrothermal method. Eu(OH) 3 samples, as a representative of the Ln(OH) 3 crystals, were characterized by X-ray diffraction (XRD), 4-circle single-crystal diffraction, Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). FESEM image shows hexagonal prism morphology for the Eu(OH) 3 large crystals. Research on the photoluminescence and magnetic properties of Eu(OH) 3 species was conducted.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Xiaohua Qi,Wenna Zhang,Na Yang,Di Yang,Igor Bychko,Mengyao Chen,Yao Wang,Dongni Han,Linjun Huang,Haoyang Jiang,Miaorong Zhang,Jiuxing Wang,Shichao Wang,Peter Strizhak,Jianguo Tang
Multi-structuralized carbon nanotubes provide various possibilities to create a new generation of functional materials . In this article, the derivative surfaces of multi-wall carbon nanotubes (DSCNTs) have been developed by starting with initial carbon nanotubes (CNTs) to obtain the derivative structures of oxidized CNTs (oxCNTs) and unzipped CNTs (uCNTs). The Eu 3+ complex is successfully directly anchored onto DSCNTs (Eu@DSCNTs) and produces linear fluorescence nanomaterials by introducing functional groups and sufficient specific surface area on the derivative surfaces. The obtained photophysical data, including UV absorption, fluorescence intensities and lifetimes, of the CNTs, oxCNTs and uCNTs have confirmed the improvement of derivative surfaces by oxCNTs and uCNTs, and the improvement is even greater for uCNTs. Furthermore, fluorescence fibres (Eu@DSCNTs/PAN) were obtained by electrospinning in a solution of Eu@DSCNTs with polyacrylonitrile (PAN). The fluorescence nanofibers have excellent fluorescence properties through the improvement of the derivative surface and exhibit excellent processability .
✓ 已验证
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Liu Deyan,Zhu Manying,Zhang Nanhai,Song Qinghe,He Guangjun,Wang Shixing,Zhang Libo
It is of urgent significance to develop highly stable and efficient CrO 4 2− detection technology in the fields of drinking water distribution and sewage treatment. A highly stable europium metal-organic framework (Eu-MOF) was designed as fluorescent probe for the efficient detection of trace CrO 4 2− in water solutions. This was achieved through the self-assembly of the lanthanide Eu 3+ and a rigid conjugated organic ligand [2,2’- biquinoline]-4,4’-dicarboxylic acid (H 2 L) under hydrothermal conditions. The obtained Eu-MOF exhibits excellent water stability, thermal stability and photostability. The Eu-MOF can quantitatively detect trace amounts of CrO 4 2− through fluorescence quenching effect. Its detection sensitivity is 4.48 × 10 4 M − 1 , with a detection limit as low as 0.06 µM (9.7 µg/L). This is one of the lowest values for the detection limit of CrO 4 2− in aqueous solution and is far below the allowable level for drinking water specified by World Health Organization. The Eu-MOF sensor also demonstrates excellent selectivity, anti-interference ability, repeatability (after 4 cycles), reproducibility and practical feasibility. Furthermore, the fluorescent luminescence and senseing mechanism were studied in detail. The fluorescence senseing mechanism of the Eu-MOF for CrO 4 2− detection involves the competitive absorption of excitation energy. The fluorescence-based sensing technology using the Eu-MOF provides a reference for environmental pollution detection and holds potential practical value.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Chaochao Tao,Songsong Ding,Shengqian Wang,Lin Liu,Houfa Mao,Genyuan Chen,Hualan Xu,Chongfeng Guo,Shengliang Zhong
Multicolor emission has long been a critical scientific challenge in the field of persistent luminescence (PersL) materials, with the achievement of multicolor PersL emission within a single host matrix representing a primary research objective. Herein, a new and effective method of using coordination polymers (CPs) as precursors is designed to synthesize multicolored CdSiO 3 :RE 3+ (RE = Pr, Sm, Eu, Tb, Tm) PersL materials. Through variation of rare earth dopants, we successfully achieved color-tunable PersL emission spanning brown, pink, purple, red, green, and blue spectra. The influence of RE 3+ dopants on the crystal structure, morphology and optical properties are studied in detail. Notably, this straightforward synthesis strategy enabled the effective production of nanospherical particles exhibiting regular morphology and uniform size distribution. The electronic band structure of the material was theoretically analyzed using density functional theory (DFT) calculations. Combined with thermoluminescence (TL) measurements were performed to elucidate the underlying PersL mechanism. To demonstrate practical applications, we designed a dynamic anti-counterfeiting pattern and evaluated the potential utility of CdSiO 3 :RE 3+ materials. This study not only enhances our fundamental understanding of CdSiO 3 -based PersL materials, but also provides novel insights into morphology and size control strategies that could be extended to other PersL material systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2026
·
IF 4.7
Yi-Na Li,Xin Zhong,Yunlong Wu,Yun-Fang Huo,Ya-Li Liu,Jun Wang,Yang-Tian Yan
In this study, a new three-dimensional metal organic framework (MOF) named [Eu 2 (L) 3 (H 2 O) 2 ] n ( 1 ), act as the ultrasensitive fluorescence sensors for tetracycline and Fe 3+ in aqueous solution, have been successfully synthesized by using the 2-(1H-pyrazol-4-yl) terephthalic acid (H 2 L) and Eu(NO 3 ) 3 ·6H 2 O as the building units via the solvothermal synthesis procedure. Structure analysis reveal that 1 show a 3D molecular structure based on a binuclear secondary building units (SBUs). And also, the physical and chemical stability show that 1 show the good stability under the strong acid and alkali aqueous solution. The fluorescence properties explorations of 1 show that 1 exhibits the attractive fluorescence performances in detecting tetracycline (TC) and Fe 3+ ions with the LODs of 3.77361 × 10 −5 M for Fe 3+ and 1.21958 × 10 −6 M for TC, which is comparable and even exceed the publications. The sensing mechanism have also been seriously explored. And importantly, the recycling experiments reveal that 1 exhibited good recyclability in fluorescence recognition after multiple experiments, which may provide us with a potential optical material for fast and efficient detection of Fe 3+ ions and TC.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 9
·628
·
IF 5.4
Li Fuping,Li Baoyu,Li Rong,Men Xue,Gao Lian-Xun,Wu Chengxin,Yang Wenrong,Pang Pengfei,Zhang Yanli
A fluorescent switch nanoprobe based on boric acid-functionalized europium-based metal–organic framework (BA-Eu-MOF) integrated with a visual analysis platform assisted by smartphone was established for the sensitive detection of Hg 2+ and glutathione (GSH). The probe was fabricated with 5-boronoisophthalic acid as ligand and europium ions as metal node, which enables specific recognition of Hg 2+ through a transmetalation mechanism. Upon the introduction of Hg 2+ , the red fluorescence of the probe was quenched (“off” state). When GSH is added, because its thiol groups have a stronger binding affinity for Hg 2+ , it competitively extracts Hg 2+ from the BA-Eu-MOF/Hg 2+ complex, leading to fluorescence recovery (“on” state). Based on this “on-off-on” mode, the quantitative detection of Hg 2+ and GSH was achieved with detection limits of 0.67 nM and 0.087 µM. Furthermore, the intelligent sensing platform for quantitative detection of analytes was developed by utilizing a smartphone Color Grab App with detection limits of 9.57 µM and 2.32 µM, respectively. Both modes were successfully employed to the detection of Hg 2+ and GSH in actual samples with spiked recoveries ranging from 88.9% to 108.0%. Benefiting from the porous characteristics of MOF and the specific recognition capability of the boric acid group, the proposed probe exhibits notable advantages including facile preparation, operational simplicity, high sensitivity, and excellent selectivity. This study provides a facile, reliable and field-applicable novel detection strategy for environmental monitoring and the investigation of interactions between heavy metals and biomolecules. Graphical
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xinyu Yao,Bobo Yang,Lan Li,Jinfang Kong,Canyun Zhang,Fengchao Wang
Essential Role of Eu 3+ in low-lead CsPbBr 3 QD glass. • Tunable Green-to-Red Emission via Eu/Pb Ratio. • Eu 3+ induced lattice contraction and PL blue shift. • Optical temperature sensing based on dual emission. CsPbBr 3 perovskite quantum dots (QDs) have garnered considerable attention owing to their outstanding optical properties. However, their practical applications are hindered by poor stability and the toxicity of lead, whereas lead-free alternatives often compromise optical performance. In this study, Eu 3 + -incorporated low-lead CsPbBr 3 QDs embedded in borosilicate glass were successfully fabricated via melt quenching and heat treatment. The molar fraction of PbBr 2 in the glass system is as low as 0.0367–0.0612%, corresponding to a lead reduction of approximately 97% compared with conventional CsPbBr 3 QD glasses. We demonstrate that Eu 3+ ions are essential for the precipitation of CsPbBr 3 QDs under low-lead conditions. Meanwhile, Eu 3+ provides red emission, thereby creating dual emission centers. The green-to-red emission ratio can be finely tuned by varying the Eu/Pb ratio. In addition, Eu 3+ substitution for Pb 2+ induces lattice contraction, which causes a blue shift of the emission peak of CsPbBr 3 QDs. Temperature-dependent photoluminescence (PL) spectra of the Eu0.6 Pb0.08 sample reveal that the fluorescence intensity ratio (FIR) increases monotonically with increasing temperature from 100 to 300 K, with maximum absolute and relative sensitivities of 3.77 × 10 −2 K −1 and 5.55 × 10 −1 K −1 , respectively. This work demonstrates the potential of low-lead perovskite QD glasses for optical temperature sensing.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）